ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,431,969, issued on Sept. 30.
"APR protection method and device, and computer storage medium" was invented by Qi Zhou (Wuhan, China), Zhaoxia Liu (Wuhan, China), Ying Zhang (Wuhan, China), Tao Yuan (Wuhan, China), Jiekui Yu (Wuhan, China), Chuanbin Zhang (Wuhan, China), Zhengwei Peng (Wuhan, China) and Feifei He (Wuhan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are an APR protection method and device, and a computer storage medium. A preamplifier PA of each of two optical amplifier units at two ends of a transmission line is connected to a booster amplifier BA of the other amplifier unit by an optical fiber. The method comprises: wh...